We (Hindus) try very hard (not easy, but we try) to not identify ourselves with the physical body, emotions, or mind. We view the 'I' as the eternal soul, or jiva. So this idea of aging is merely something that happens to the physical body, which is not who we are. Many physical bodies that the soul inhabited earlier have aged and dropped off in death, so it's a natural process. We're also not particularly nostalgic, but try to remain aloof or detached from the past, and more focused on the now, doing what we are doing in the moment to a high level of focus.
So the idea of aging doesn't actually exist. It's just a natural process, as is death.